I will set no wicked thing before mine eyes: I hate the work of them that turn aside; it shall not cleave to me. – Psalm 101:3

There are many things, in this world, that would be execrated if it were not that Christian men go to them, and the ungodly men say, “Well, if it is not righteous, there is not much harm in it, after all; it is innocent enough if we keep within bounds.” Mind! mind! mind, professor, if thine heart begins to suck in the sweets of another man’s sin, it is unsound in the sight. of God; if thou canst even wink at another man’s lust, depend upon it that thou wilt soon shut thine eye on thine own, for we are always more severe with other men than we are’ with ourselves. There must be an absence of the vital principle of godliness when we can become partakers of other men’s sins by applauding or joining with them in the approval of them. Let us examine ourselves scrupulously, then, whether we be among those who have no evidences of that holiness without which no man can see God. But, beloved, we hope better things of you, and things which accompany salvation. If you and I, as in the sight of God, feel that we would be holy if we could, that there is not a sin we wish to spare, that we would be like Jesus, -O that we could !-that we would sooner suffer affliction than ever run into sin, and displease our God; if our heart be really right in God’s statutes, then, despite all the imperfections we bemoan, we have holiness, wherein we may rejoice, and we pray to our gracious God,-

“Finish, then, Thy new creation,
Pure and spotless let us be.”

~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2902.cfm