2:10 revealed to us. See theological note “Illumination and Conviction.”
searches everything. The idea of divine searching (cf. Ps. 139:1; Rom. 8:27) emphasizes God’s omniscience, particularly His power to see what is invisible to humans (John 2:25). It does not imply that the Holy Spirit needs to seek knowledge of the Father that He otherwise lacks. The Spirit probes the depths of divine knowledge for our benefit.