“Be watchful, stand firm in the faith, act like men, be strong. Let all that you do be done in love” (v13-14). Jesus had totally changed Paul’s vision of strength. He had tried to use human power to threaten and control others, but Jesus had opened his blind eyes. Now, Paul communicated that God’s kind of strength and firmness was inseparable from love; in fact, strength expresses itself in sacrificial love that puts others first, crucifies our selfish desires, and speaks truth with gentleness.
“If anyone has no love for the Lord …” (v22). Just as the Old Testament says (Deut 6), God desires more than our belief; He wants us to love Him and love others with our hearts.