Exodus 4:22
20 Then Moses took his wife and sons and put them on a donkey and headed back to the land of Egypt, and Moses took the staff of God in his hand. 21 The Lord said to Moses, “When you go back to Egypt, see that you do before Pharaoh all the wonders I have put under your control. But I will harden his heart and he will not let the people go. 22 You must say to Pharaoh, ‘This is what the Lord has said, “Israel is my son, my firstborn, 23 and I said to you, ‘Let my son go that he may serve me,’ but since you have refused to let him go, I will surely kill your son, your firstborn!”’” 24 Now on the way, at a place where they stopped for the night, the Lord met Moses and sought to kill him.
Jeremiah 31:9
7 Moreover, the Lord says:“Sing for joy for the descendants of Jacob. Utter glad shouts for that foremost of the nations. Make your praises heard. Then say, ‘Lord, rescue your people. Deliver those of Israel who remain alive.’ 8 Then I will reply, ‘I will bring them back from the land of the north. I will gather them in from the distant parts of the earth. Blind and lame people will come with them, so will pregnant women and women about to give birth. A vast throng of people will come back here. 9 They will come back shedding tears of contrition. I will bring them back praying prayers of repentance. I will lead them besides streams of water, along smooth paths where they will never stumble. I will do this because I am Israel’s father; Ephraim is my firstborn son.’ 10 “Listen to the Lord’s message, O nations. Proclaim it in the faraway lands along the sea. Say, ‘The one who scattered Israel will regather them. He will watch over his people like a shepherd watches over his flock.’ 11 For the Lord will rescue the descendants of Jacob. He will secure their release from those who had overpowered them.
Notes and References
"... this designation of God as 'your' ('my') 'Father in heaven' is attested in rabbinic Judaism from about the end of the first century CE. It is found neither in the Old Testament nor in the Apocrypha. In the Old Testament Israel is called Gods son (Exodus 4:22-23), Gods sons (Deuteronomy 30:9; 32:5; Isaiah 1:4; Hosea 2:1; 1 Chronicles 29:10, etc.). In Jeremiah 3:4,19 Israel calls God her father; so also in Isaiah 63:16; 64:8. In Jeremiah 31:8(9) and Malachi 1:6 God professes himself Father of Israel. In later Judaism mention is made but rarely of God as Father of Israel. There seems to have been a tendency to avoid the designation. This tendency is noticeable in the Targum to the Prophets, where the word "father" is replaced by some other word, or the text is made to say that God is as a father. Thus 'Thou art our Father' of Isaiah 63:16 becomes in the targum: 'Thou art he whose compassions towards us are more than those of a father towards his children.' Likewise in Targum Isaiah 64:8. In Targum Jeremiah 3:4, 19 it is replaced by "master"; in Tg. Jeremiah 31:9 and Malachi 1:6 it is preceded by 'as,' 'like' (a father) ..."
McNamara, Martin Targum and Testament Revisited Aramaic Paraphrases of the Hebrew Bible: A Light on the New Testament (p. 179) William B. Eerdmans Publishing Company, 2010