Psalms 101:3

I will set no wicked thing before mine eyes - That is, I will propose no wicked thing to be done; I will have no such object in view; I will employ no one to do that which is wrong. The margin, as the Hebrew, is, “thing of Belial.” See the notes at Psalms 41:8. It here means that which is worthless, bad, wicked. He would have no wicked aim; he would not look upon a wicked thing for a moment, or with the least favor.

I hate the work of them that turn aside - All their doings, motives, plans. The word rendered “turn aside” means to turn out of the way; out of the right path: Wanderers - transgressors - those who leave the path of truth and honesty.

It shall not cleave to me - I will have nothing to do with it. It shall not he allowed to attach itself to me. A wicked plan or purpose is thus represented as having a tendency to fasten itself on a man, or to “stick to him” - as pitch, or wax, as a “burn” does.