אֲנִֽי־קְרָאתִ֣יךָ כִֽי־תַעֲנֵ֣נִי אֵ֑ל הַֽט־אָזְנְךָ֥ לִ֝֗י שְׁמַ֣ע אִמְרָתִֽי׃
As for me, I call upon Thee, for Thou wilt answer me, O God; Incline Thine ear unto me, hear my speech.
Rashi on Psalms
because You shall answer me, O God Because I am confident that You will answer me.
Radak on Psalms
I have called upon Thee, for Thou wilt answer me, God: – Therefore I have called upon Thee because 1 trusted in Thee that Thou wouldest answer me and art able to help me. This also is the sense of