Why is Christ's promise of presence important for Christians?

The importance of Christ's promise lies in the comfort and strength it provides to believers, especially in the context of the Great Commission. As Christians undertake the mission to teach and baptize all nations, knowing that Jesus is with them bolsters their confidence and resolve. This promise reassures them that they do not embark on this mission alone; Jesus shares in the burden of ministry. Furthermore, it serves as a reminder that God's presence is with them during both the joys and trials of life, affirming their identity as His disciples and encouraging self-denial for the sake of His glory.