How do we know that Jesus is a servant and sovereign?

In John 13, Jesus demonstrates His dual role as both sovereign Lord and humble servant. The passage reveals that He is the second person of the Trinity, fully God, yet He chose to humble Himself to serve His people. This paradox of His nature is foundational to the gospel—it showcases how He willingly submitted to the Father's will to fulfill the covenant of grace. His sovereignty ensures that all things pertaining to salvation are in His control, while His servanthood illustrates His love and commitment to redeem His people through His sacrifice. Ultimately, His humility does not diminish His lordship; rather, it magnifies it.