The Lord, and his strength, i.e. by a figure called hendiaduo, the Lord in his strength, to wit, in his sanctuary, or before the ark, which is called God’s strength, Psa_63:2 78:61, and the ark of his strength, Psa_132:8.
His face, i.e. his gracious presence in his sanctuary, and the blessed fruits of it. See on Psa_27:8.