“O righteous Father, the world hath not known Thee.”- John 17:25

This is the name which we most need to know-“righteous Father.” Observe the singular combination. Righteous and yet a Father. “Righteous”: to us poor sinners that is a word of terror when first we hear it. “Father,”-oh, how sweet. That is a word of good cheer even to us prodigals; but we are afraid to lay hold upon it, for our sins arise, and conscience protests that God must be righteous, and punish sin. Our joy begins when we see the two united: “righteous Father,”-a Father full of love, and nothing but love, to His people, and yet righteous as a Judge, as righteous as if He were no Father. Dealing out His righteousness with stern severity as the Judge of all the earth must do, and yet a Father at the same time. I do protest that I never did love God at all, nor could I embrace Him in my affections, till I understood how He could be just and yet the justifier of him that believeth in Jesus: how, in a word, He could be the “righteous Father.” That satisfied my conscience and my heart at the same time, for my conscience said, It is well. God hath not put away sin without a sacrifice, and hath not winked at sin nor waived His justice in order to indulge His mercy, but He remains just as He ever was-the same thrice holy God who will by no means spare the guilty. He hath laid the punishment of our sins upon Christ; He hath made Him to be sin for us, who knew no sin, that we might be made the righteousness of God in Him. And all this He has done that He might act to us as a Father, and save His own children from the result of their transgressions. He has given His only begotten Son to die in our stead that many sons might be brought to glory through Him. It is at the cross we understand this riddle. Here we see the righteous Father. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1667.cfm