How do we know that Christ's requests will be granted?

In John 17, we see that every request made by Jesus to the Father is grounded in the fulfillment of the covenant of grace. The assurance that Christ's prayers will be granted comes from the infallible nature of His intercession, which is based upon His completed work on the cross. As the mediator who has appeased God's wrath through His sacrifice, all that He asks is granted by the Father. This reflects the confidence believers can have in their salvation; it is not based merely on human efforts but on the accomplished work of Christ. His prayers affirm the secure standing of His elect before God, highlighting the effectiveness of His atoning work.