Romans 1:32 and Romans 2:1 (NIV)
Although they know God’s righteous decree that those who do such things deserve death, they not only continue to do these very things but also approve of those who practice them.
You, therefore, have no excuse, you who pass judgment on someone else, for at whatever point you judge the other, you who pass judgment do the same things.
Just a few brief thoughts to note hear. Verse 32 tells us plainly not to 1) do the sorts of things previously listed (including homosexuality) and 2) to definitely not give approval of those who practice them. But verse 1 tells us plainly that we are completely unfit to judge others without condemning ourselves because we do the same things.
In the Sermon on the Mount, Jesus plainly sets a bar so high that it is impossible that we should reach it; rather it is only faith which can save us. Jude further tells us that “we are to snatch others from the fire and save them; to others show mercy, mixed with fear—hating even the clothing stained by corrupted flesh.”
The walk of the believer then is most assuredly a narrow one. He is called to stand against sin, condemning it completely, shunning it and denouncing it as sin. At the same time he is called to stand with the sinner, being merciful and humble, hoping by any means that the sinner might recognize that he too is naught but a beggar in need of grace.