To dwell in the house of Yahweh is to abide under His wings and to be covered by His shadow, you are always covered by Him whereever you go, He is with you always.
To seek His face is to be still in His presence and listen to His voice. Always seeking what His plans are for you and obeying. Having His presence fill you and saturate you. I delight to do your will O Father, for I am of your family.
David provides hope by alluding to the fact, that even in our trials if we will: wait for Yahweh, expect Yahweh, have a courageous heart, wait confidently for Him, He will come to our rescue. HalleluYah, He will never leave us nor forsake us. Praise be to Yahweh!