God hath spoken in his holiness - בקדשו bekodsho; some think this means in his Holy One, referring to the Prophet Jeremiah, who predicted the captivity, its duration of seventy years, and the deliverance from it.

Gilead

Joshua 13:8-11 With whom the Reubenites and the Gadites have received their inheritance, which Moses gave them, beyond Jordan eastward...

2 Samuel 2:8 But Abner the son of Ner, captain of Saul's host, took Ishbosheth the son of Saul, and brought him over to Mahanaim;

2 Samuel 5:5 In Hebron he reigned over Judah seven years and six months: and in Jerusalem he reigned thirty and three years over all Israel and Judah...

Ephraim

Deuteronomy 33:17 His glory is like the firstling of his bullock, and his horns are like the horns of unicorns...

1 Samuel 28:4 And the Philistines gathered themselves together, and came and pitched in Shunem: and Saul gathered all Israel together...

Judah

Psalm 122:5 For there are set thrones of judgment, the thrones of the house of David.

Genesis 49:10 The scepter shall not depart from Judah, nor a lawgiver from between his feet, until Shiloh come...

The Mercy of God
The next attribute is God's goodness or mercy. Mercy is the result and effect of God's goodness. Psa 33:5. So then this is the next attribute, God's goodness or mercy. The most learned of the heathens thought they gave their god Jupiter two golden characters when they styled him good and great. Both these meet in God, goodness and greatness, majesty and mercy. God is essentially good in himself and relatively good to us. They are both put together in Psa 119:98. Thou art good, and doest good.' This …
Thomas Watson—A Body of Divinity