How do we know that believers are strengthened by God's grace?

The assurance found in Zechariah 12:8 emphasizes that God's grace enables believers to become strong, reflecting the strength of David. This is not a result of their own merit but rather a manifestation of their union with Christ, the ultimate David. Each believer, through their relationship with Jesus, shares in His strength and righteousness. As they grow in faith, they are reminded to continually seek deeper communion with Him, highlighting the importance of an active and thriving spiritual life grounded in grace. This ongoing reliance on God's strength assures believers that even in their weakness, they can find empowerment in Christ.