What does it mean that Christ will not fail in what He is doing now?

Currently, Christ is seated at the right hand of God, actively interceding for His people. Isaiah 43:5-6 illustrates how He calls His elect from all corners of the earth, demonstrating His ongoing work in salvation. Furthermore, He meets every need of every sinner redeemed by His grace and sustains their souls. Philippians 4:19 assures us that God will supply all our needs according to His riches in glory through Christ Jesus. This ongoing ministry provides believers with security and confidence in their walk with God.