Why is the sustenance of spiritual life important for Christians?

Spiritual life is an essential component of the Christian faith, rooted in the understanding that Christ is the source of this life. Colossians 3:4 reminds us that 'when Christ, who is our life, appears, then you also will appear with Him in glory.' This underscores the idea that all Christian graces, including justification and sanctification, derive their strength and sustenance from Christ. Recognizing that our spiritual life is upheld by Him is vital for growth in grace, resilience against trials, and deepening communion with God. It prompts believers to rely entirely on His divine power for spiritual nourishment and transformation, as apart from Him we can do nothing.