We have been made whole by Christ Jesus. There is nothing lacking in those who are InChrist 2Pe 1:3. We are complete.
That which appears to be imperfect in us will be perfected by Him Rom 8:23 1Co 15:53 because we are His workmanship Eph 2:10.
How is this possible? Why is this so? What about our short-comings?
The Love of the Lord towards us constrained Him to do what was necessary to justify us so that we could be in intimate personal relationship with Him John 3:16,17 Phi 2:1 Gen 3:8 Joh 17:21.
Our Lord`s Grace is legitimate because He is Saviour Act 4:12, King and Lord of heaven and earth Phi 2:9-11 Rev 19:16. He has willed it and it is so because He has spoken it Jer 31:34 Heb 8:10.