Be perfect as your Father in heaven is perfect. Meaning believe in Jesus Christ and his righteousness imputed to you makes you perfect in God's sight based on the finished work of the cross by faith alone without works. Christ came to call sinners to repentance and not the righteousness. Once you have become perfect and righteous in his sight then Christ is no longer calling you to repentance in this dispensation of grace. After all you are perfect in God's sight. Amen.

Matthew 5:48 Be ye therefore perfect, even as your Father which is in heaven is perfect.

Luke 5:32 I came not to call the righteous, but sinners to repentance.

Colossians 1:22 In the body of his flesh through death, to present you holy and unblameable and unreproveable in his sight:
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Romans 4:5 But to him that worketh not, but believeth on him that justifieth the ungodly, his faith is counted for righteousness.

​If you are in Christ then you are no longer wretched in his sight. That was the old person but now you are a new creature in Christ. You are perfect in his sight based on the finished work of the cross by faith alone without works. Satan wants you to think you are still wretched in the sight of God. Change your way of thinking with the renewal of your mind and live in the serenity of the understanding of your new identity in Christ. At the end of the day God's report about you is what matters and not Satan's false report about you. Amen.