What does it mean to be strong in the Lord?

To be strong in the Lord is to cultivate a relationship that continuously draws upon His strength for daily living. It involves seeking God earnestly through prayer, scripture reading, and fellowship, which are means by which believers receive His strength. This reliance reflects a humble acknowledgment of one's own limitations and the need for divine assistance in overcoming sin and spiritual conflict. The Christian life is therefore characterized not by self-sufficiency but by dependence on the grace and power of God, as highlighted in Isaiah 40:31, which promises that those who wait on the Lord will renew their strength.