If Yahweh was the one true God who alone created the heavens and the earth and sent Jesus as his servant, then how can Jesus be God?

The question presupposes that Yahweh is a uni-personal God, which is a misunderstanding of the Christian doctrine of the Trinity. In Christianity, God is understood as a Triune Being, meaning that the Father, Son (Jesus), and Holy Spirit are distinct persons but of one essence. This allows for the possibility of one Divine member sending another for a specific purpose. Furthermore, while Christians affirm that Yahweh alone created all things, this does not negate the roles of the Son and the Spirit in creation, as seen in various biblical texts. The New Testament explicitly identifies Jesus as the Word of God, through whom all things were made, thus affirming His divine nature and role in creation alongside the Father. The exalted descriptions of Jesus in the New Testament do not compromise monotheism but rather reflect the complexity of God's nature as understood in Christian theology.