2 Timothy 2: be strong in the grace

Paul is in a prison. Timothy is a bishop and the church is facing problems: some are preaching heresies there. Timothy must confront these preachers but Timothy is young and he is a little timid. Can Timothy deal with his mission? We read:

1 You therefore, my son, be strong in the grace that is in Christ Jesus.

"be strong" came from Endynamoō which means: "be continually strengthened" or "allow yourself to be empowered". Paul is not asking Timothy to trust in himself, to be strong using his power, Paul is asking Timothy to trust in Jesus's power. "Be strong in the grace that is in Christ Jesus" is a command to us, Christians, today.