Prov. 12:26 says, "A righteous man is cautious in friendship, but the way of the wicked leads them astray."
This tells us how very important it is that we are cautious in picking our friends. We need to be sure that we are hanging out with people who believe the way we believe, think the way we think, and behave with way God would want us to. The second part of this verse tells us how easy it is to be led astray if we keep company with people who do not believe the way we believe, think the way we think, and behave with way God would want us to.
Prov. 17:17a says, "A friend loves at all times." To me, this means that when we choose to do the right thing, "the best thing", instead of going along with the crowd; true friends will love me anyway. If our friends cannot accept our standing up for what we believe in or accept our saying "no" because it is better for our well being…maybe they really aren't true friends after all.
And this leads us to Prov. 18:24 which says, "A man of many companions may come to ruin, but there is a friend who sticks closer than a brother." We may have many companions but are they true friends? There is a friend who sticks closer than a brother and His name is Jesus. Others may leave you but He won't.
John 15:13 says, "Greater love has no one than this, that he lay down his life for his friends." Jesus did that for us. He is our friend.
Jesus said in John 15:14, "you are my friends if you do what I command."