"believed that the troops of Saul would not be ordered to invade this sacred place, but no place seemed to be sacred to the darkened mind of the desperate king. David's connection with Samuel aroused the jealousy of the king, lest he who was revered as a prophet of God throughout all Israel should lend his influence to the advancement of Saul's rival. When the king learned where David was, he sent officers to bring him to Gibeah, where he intended to carry out his murderous design. PP 653.1"
Both passages describe someone plotting evil. In EGW, Saul is planning to murder David. In Psalms, the verse describes someone who 'deviseth mischief upon his bed.' The common theme is the planning and intention to do evil.
"“How precious is Thy loving-kindness, O God! ... The children of men take refuge under the shadow of Thy wings.” “Happy is he that hath the God of Jacob for his help, Whose hope is in the Lord his God.” MH 417.7"
"“The Lord upholdeth all that fall, And raiseth up all those that be bowed down. The eyes of all wait upon Thee; And Thou givest them their meat in due season. Thou openest Thine hand, And satisfiest the desire of every living thing.” Jeremiah 10:23 ; Proverbs 3:5, 6 ; Psalm 33:18, 19 ; Psalm 36:7 , A.R.V.; Psalm 146:5 ; Psalm 119:64 , A.R.V.; Psalm 33:5 , A.R.V.; Psalm 65:5-7 , A.R.V.; Psalm 65:8, 11 ; Psalm 145:14-16 . MH 418.3"
Ellen White directly references Psalms 36:7 in this passage.
Psalms 36:7-9"How excellent is thy lovingkindness, O God! therefore the children of men put their trust under the shadow of thy wings. They shall be abundantly satisfied with the fatness of thy house; and thou shalt make them drink of the river of thy pleasures. For with thee is the fountain of life: in thy light shall we see light."
"“How excellent is Thy loving-kindness, O God!” “The children of men take refuge under the shadow of Thy wings.... And Thou wilt make them drink of the river of Thy pleasures. For with Thee is the fountain of life: In Thy light shall we see light.” MH 463.2"
"life.” Psalm 36:9 . Not only is He the originator of all, but He is the life of everything that lives. It is His life that we receive in the sunshine, in the pure, sweet air, in the food which builds up our bodies and sustains our strength. It is by His life that we exist, hour by hour, moment by moment. Except as perverted by sin, all His gifts tend to life, to health and joy. Ed 197.5"
"So long as they remained loyal to the divine law, their capacity to know, to enjoy, and to love, would continually increase. They would be constantly gaining new treasures of knowledge, discovering fresh springs of happiness, and obtaining clearer and yet clearer conceptions of the immeasurable, unfailing love of God.— Patriarchs and Prophets, 50, 51. CE 208.1"
Both passages speak of a source of life and light emanating from God, leading to increased understanding and joy. The EGW passage expands on the implications of this divine connection.
"The words of God are the wellsprings of life. As you seek unto those living springs you will, through the Holy Spirit, be brought into communion with Christ. Familiar truths will present themselves to your mind in a new aspect, texts of Scripture will burst upon you with a new meaning as a flash of light, you will see the relation of other truths to the work of redemption, and you will know that Christ is leading you, a divine Teacher is at your side. MB 20.1"
Both passages link a divine source (God's words/God) with light and life. EGW's 'wellsprings of life' and the idea of seeing truth 'as a flash of light' connect with Psalm 36:9's 'fountain of life' and 'in thy light shall we see light.'