Vv. 17-19 belong to the individual voice. The procession has reached the Temple. Deeper thoughts than before now mark the retrospect of past trial and deliverance. Both are recognised to be from Jehovah. It is He who has corrected, severely indeed, but still "in measure, not to bring to nothing, but to make capable and recipient of fuller life." The enemy thrust sore, with intent to make Israel fall; but God's strokes are meant to make us stand the firmer. It is beautiful that all thought of human foes has faded away, and God only is seen in all the sorrow. But His chastisement has wider purposes than individual blessedness. It is intended to make its objects the heralds of His name to the world. Israel is beginning to lay to heart more earnestly its world-wide vocation to "tell forth the works of Jehovah." The imperative obligation of all who have received delivering help from Him is to become missionaries of His name. The reed is cut and pared thin and bored with hot irons, and the very pith of it extracted, that it may be fit to be put to the owner's lips, and give out music from his breath. Thus conscious of its vocation and eager to render its due of sacrifice and praise, Israel asks that "the gates of righteousness" may be opened for the entrance of the long procession. The Temple doors are so called, because Righteousness is the condition of entrance (Isa. xxvi. 2: compare Psalm xxiv.). Ver. 20 may belong to the individual voice, but is perhaps better taken as the answer from within the Temple, of the priests or Levites who guarded the closed doors, and who now proclaim what must be the character of those who would tread the sacred courts. The gate (not as in ver. 19, _gates_) belongs to Jehovah, and therefore access by it is permitted to none but the righteous. That is an everlasting truth. It is possible to translate, "This is the gate _to_ Jehovah"--_i.e._, by which one comes to His presence; and that rendering would bring out still more emphatically the necessity of the condition laid down: "Without holiness no man shall see the Lord." The condition is supposed to be met; for in ver. 21 the individual voice again breaks into thanksgiving, for being allowed once more to stand in the house of Jehovah. "Thou hast answered me": the psalmist had already sung that Jah had answered him (ver. 5). "And art become my salvation": he had already hailed Jehovah as having become such (ver. 14). God's deliverance is not complete till full communion with Him is enjoyed. Dwelling in His house is the crown of all His blessings. We are set free from enemies, from sins and fears and struggles, that we may abide for ever with Him, and only then do we realise the full sweetness of His redeeming hand, when we stand in His presence and commune evermore with Him.