How do we know Christ is sufficient for all our needs?

The New Testament consistently frames Christ as the all-sufficient Savior, addressing every aspect of life and salvation. Colossians 2:10 states, 'And ye are complete in him, which is the head of all principality and power.' This presents a clear picture of Christ as the source of our spiritual well-being, ensuring that believers are fully provided for through their union with Him. We are urged to rest in His sufficiency rather than depend on our own abilities or circumstances, which ultimately fail to sustain us.