Matthew 5:48
Therefore, you must [attempt to] be complete, just as your heavenly Father is [already] complete.
Philippians 3:12
[It is] not that I have already arrived at the goal [of spiritual maturity], or have already been made perfectly [righteous], but I am pushing onward in order to take hold of what Christ Jesus took hold of me for [i.e., to receive all that Christ intended for me].
Philippians 3:15
So, all of us who are mature [Christians] should think this way. And if you people think differently about anything, God will reveal that to you also.
Revelation 3:2
Wake up, and strengthen what remains [i.e., those few in the church who were trying to stay faithful], who are about to die. For I have not found [any] of your deeds to be complete before my God.