Genesis 22:1-2

1,2 We never are secure from trials In Hebrew, to tempt, and to try, or to prove, are expressed by the same word. Every trial is indeed a temptation, and tends to show the dispositions of the heart, whether holy or unholy. But God proved Abraham, not to draw him to sin, as Satan tempts. Strong faith is often exercised with strong trials, and put upon hard services. The command to offer up his son, is given in such language as makes the trial more grievous; every word here is a sword. Observe, 1. The person to be offered: Take thy son; not thy bullocks and thy lambs. How willingly would Abraham have parted with them all to redeem Isaac! Thy son; not thy servant. Thine only son; thine only son by Sarah. Take Isaac, that son whom thou lovest. 2. The place: three days' journey off; so that Abraham might have time to consider, and might deliberately obey. 3. The manner: Offer him fro a burnt-offering; not only kill his son, his Isaac, but kill him as a sacrifice; kill him with all that solemn pomp and ceremony, with which he used to offer his burnt-offerings.