Psalms 139:3

Thou compassest my path and my lying down, and art acquainted with all my ways.

God knows and takes strict and accurate notice of all our ways

This is so, because--

I. God rules and governs men. But this could not be without such knowledge. And so at times He governs men’s secret projects.

1. By discovering them, making them known to others.

2. By preventing them.

3. By turning them to other ends than men purposed (Isaiah 7:7; Genesis 45:5).

II. He gives laws to regulate them.

III. He will judge them.

1. He does so in this life where He often gives foretaste of the future (Deuteronomy 29:18),

2. In the day of judgment (Luke 12:2).

IV. He is omniscient and omnipresent (Proverbs 15:3; Hebrews 4:13). Then--

1. Presumptuous sin is atheism.

2. Let secret sinners be afraid.

Such are those who sin in thought and desire only. God judges such, for they are the roots of sin. Spiritual wickedness is worst wickedness. And they are the product of the man himself, as his actions sometimes are not. And there are secret sins not only thought, but acted, only concealed from men (2 Samuel 12:12; Habakkuk 2:11; Genesis 4:10). God will judge them.

3. Let sincere-hearted Christians be comforted. The same sun-rising and break of day that terrifies the robber is a comfort to the honest traveller. Thou that, art sincere, God sees that sincerity in thee that others cannot discern; perhaps thou canst not fully discern it thyself. And He will exalt thee. (R. South, D. D.)

The record of our lives: -

I. That record is complete.

II. That record may be presented to our condemnation. Men are making efforts to recover the secrets of another’s brain. It is hard to conceive what the possibility means, as suggested by the results of rapid photography in the vitascope. It is not position that is presented, but action; even the change of face with change of thought. It is the publication of a partial set of records. Who could risk the scrutiny of their whole lives with such publicity?

III. But that record can be blotted out. A photographer can remove the sensitive salts in a bath. The picture then has no existence and cannot be exhibited; But we cannot trust our forgetfulness to do this, nor man’s charity. But God in mercy has provided a cleansing flood. (W. J. Gregory.)

God’s winnowing

The word in the Hebrew original for “compassest” is “winnowest.” This calls up before the mind an image which helps to illustrate the meaning of the verse in a most interesting manner. The mere compassing of our path by God is an elementary, commonplace truth which requires no argument or proof. It is a truism which loses very much the power of truth through our familiarity with it. But when we substitute the winnowing of our path by God’s dealings with us, we have not in that case a commonplace fact, but a most suggestive and instructive metaphor. Harvest operations in the East are all carried on in the open air, for the weather at that time of the year is uniformly fine. When the corn is reaped it is not piled into stocks, or gathered into barns, as with us, but threshed on the spot, on some piece of rising ground, beaten hard and smooth, and exposed to the wind. The sheaves are heaped on this spot, arranged in a circle, and over them are driven rude, heavy sledges of wood, having their under-surface stuck full of sharp pieces of hard basalt. Oxen are yoked to these sledges, and a man stands on them to increase their pressure, while another man drives the oxen round and round upon the sheaves until they are mashed to pieces, the straw being broken and crushed, and the grains of corn separated from it. When the grain is all threshed out in this manner, the heaps of mixed corn and broken straw are tossed up before the breeze with a shovel; and then the grain, being heaviest, falls straight down, and the broken straw and chaff, being lighter, is carried by the wind, and forms a heap a little farther on. This explanation will make perfectly clear the allusion of the psalmist: “Thou compassest, or winnowest, my path.” It refers to the oxen going round and round on the sheaves laid on the threshing-floor, in order to separate the corn from the straw and chaff. In like manner, the psalmist, by a bold figure, represents God going round and round our path by His dealings with us in providence and grace, in order to purify our nature, and to separate the good from the evil. God humbles Himself to do for us the work which the oxen do for the corn. We are valuable to Him as the corn is to the husbandman. How patiently do the oxen plod on hour after hour, going their constant round, treading down the corn until their task is accomplished. And so how patiently and unweariedly does God compass your path with His providences and gracious dealings, till He has fulfilled in you the good pleasures of His goodness, and prepared you for being presented faultless before the presence of His glory with exceeding joy. Life to every one is a common round of continual beginnings and endings. Each day is a little circle returning where it began. Our range is as narrow as that of the ox that treadeth out the corn among the heap of sheaves. And all this is apt to become monotonous and wearisome. Some are so consumed by ennui that life has lost all relish for them; and some have grown so tired of pacing the irksome daily round that they have put an end to it by violent means. But surely it gives a new zest to life if we realize that all this constant doing of the same things, this constant going round and round the same little circle of daily duties, is not a treadmill penance, a profitless labour like weaving ropes of sand, but is designed to bring out and educate to the utmost perfection of which we are capable all that is best and most enduring in us. And surely it heightens the interest immeasurably to be assured that God has not merely ordained this long ago as part of His great providential plan for the world, but that He is daily and hourly superintending the process of our discipline and education by His personal presence, compassing our path, going round with us in the circle of life’s toils and duties, and causing all our experiences, by His blessing, to work together for our good. He will not go round on your sheaves with His heavy dispensations oftener than is required to separate the chaff from the wheat; and you may be certain that not one grain of good in you will be destroyed, not one element of lasting benefit will be injured--only the chaff will be blown away and the straw removed. (H. Macmillan, D. D.)