Psalms 27:4

The greatest gift that God could give David would be the privilege of spending his time contemplating and reflecting on the wonderful features of his God. [Note: See Lewis, pp. 44-53.] The psalmist could achieve this well in Israel near the ark of the covenant, where God localized His presence in a special sense. There the priests read and studied the Mosaic Law and worshipped God with prayers and songs. The temple in view here was not Solomon’s since Solomon had not yet built it. It was probably the tent that David had constructed in Jerusalem to house the ark-that was a successor to the Mosaic tabernacle-that stood at Gibeon during David’s reign.

"As in the well-known Psalms 23:6, this is not an ambition to be a priest or Levite but to enjoy the constant presence of God which is typified by their calling. Note the singleness of purpose (one thing)-the best answer to distracting fears (cf. 1-3)-and the priorities within that purpose: to behold and to inquire; a preoccupation with God’s Person and His will. It is the essence of worship; indeed of discipleship." [Note: Kidner, pp. 120-21.]