Is the God of the Old Testament different from the God of the New Testament?

The objective of these videos is to present Catholic doctrine, the truths of faith that we have received from God himself, through revelation. For this reason, I hope that this information helps my fellow Catholics to love Christ more, and live the faith with greater devotion knowing what we believe and what we celebrate.
I ask for respect for my beliefs and those of millions of Catholics in the world. If you do not share what I present here, I am very sorry, but do not try to make us change the Word of God, commenting that what I present in the video is a lie.

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Same GOD ONE GOD GOD OF ISRAEL 🇮🇱 AMEN AND AMEN 🙏🏼