add to your faith virtue - 2nd peter 1:5

Add means that we have to do something. We are in danger of forgetting that we cannot do what God does, and that God will not do what we can do.
We cannot save nor sanctify ourselves— God does that.
But God will not give us good habits or character, and He will not force us to walk correctly before Him.
We have to do all that ourselves.
We must “work out” our “own salvation” which God has worked in us ( Philippians 2:12 ). Add means that we must get into the habit of doing things, and in the initial stages that is difficult. To take the initiative is to make a beginning— to instruct yourself in the way you must go.

{ Oswald Chambers: 5.10.10 }