You therefore, my child, be strong in the grace that is in Christ Jesus.
Be strengthened in grace, not as a permission to sloth, but as a command to shake off the flesh's sluggishness. Even the most gifted lose heart midway unless they are constantly aroused and reminded that their strength comes not from themselves but from Christ.
AI summary
Commenting on 2 Timothy 2:1-26
Here Paul encourages Timothy to constancy and perseverance in his work: Be strong in the grace that is in Christ Jesus, Ti2 2:1. Observe, Those who have work to do for God must stir up themselves to do it, and strengthen themselves for it. Being strong in the grace that is in Christ Jesus may be understood in opposition to the weakness of grace.
Commenting on 2 Timothy 2:1-7
Thou therefore, my son,.... The illative particle, "therefore", shows the connection between this and the preceding chapter; the appellation, "thou, my son", expresses the apostle's tender affection for Timothy, and is the rather used to engage his attention to the advice he was about to give him; which is, that since he had received the true grace of God, and unfeigned faith dwelt in him...