He established it for a testimony in Joseph
When he went throughout the land of Egypt.
I heard a language that I did not know:
There is a contrast exhibited here in this verse; the first two lines stand in contrast with the third. Few things in the world can create the depth of loneliness and isolation as being in a foreign country where you do not know the language or the customs. Add to that the fact that you reside there as a slave for the benefit of that society and it magnifies the isolation and bitter feeling. The third line expresses all of this. This lifts up the message of the verses before this ever higher. Sing, yes sing heartily. “Raise a song,” yes, raise it up high. Sing to God our strength, yes, consider how strong!
The past victory mentioned here is only a foretaste of a greater victory over a greater foe.
But when this perishable will have put on the imperishable, and this mortal will have put on immortality, then will come about the saying that is written, “DEATH IS SWALLOWED UP in victory. “O DEATH, WHERE IS YOUR VICTORY? O DEATH, WHERE IS YOUR STING?” The sting of death is sin, and the power of sin is the law; but thanks be to God, who gives us the victory through our Lord Jesus Christ. 1 Cor 15:54-57
The following is taken directly from The Treasury of David by Spurgeon.
This he ordained in Joseph for a testimony.
The nation is called Joseph, because in Egypt it would probably be known and spoken of as Joseph’s family, and indeed Joseph was the foster father of the people. The passover, which is probably here alluded to, was to be a standing memorial of the redemption from Egypt; and everything about it was intended to testify to all ages, and all peoples, the glory of the Lord in the deliverance of his chosen nation.
When he went out through the land of Egypt.
Much of Egypt was traversed by the tribes in their exodus march, and in every place the feast which they had kept during the night of Egypt’s visitation would be a testimony for the Lord, who had also himself in the midnight slaughter gone forth through the land of Egypt. The once afflicted Israelites marched over the land of bondage as victors who trample down the slain.
Where I heard a language that I understood not.
Surely the connection requires that we accept these words as the language of the Lord. It would be doing great violence to language if the “I” here should be referred to one person, and the “I” in the next verse to another. But how can it be imagined that the Lord should speak of a language which he understood not, seeing he knows all things, and no form of speech is incomprehensible to him? The reply is, that the Lord here speaks as the God of Israel identifying himself with his own chosen nation, and calling that an unknown tongue to himself which was unknown to them. He had never been adored by psalm or prayer in the tongue of Egypt; the Hebrew was the speech known in his sacred house, and the Egyptian was outlandish and foreign there. In strictest truth, and not merely in figure, might the Lord thus speak, since the wicked customs and idolatrous rites of Egypt were disapproved of by him, and in that sense were unknown. Of the wicked, Jesus shall say, “I never knew you;” and probably in the same sense this expression should be understood, for it may be correctly rendered, “a speech I knew not I am hearing.” It was among the griefs of Israel that their taskmasters spake an unknown tongue, and they were thus continually reminded that they were strangers in a strange land. The Lord had pity upon them, and emancipated them, and hence it was their bounden duty to maintain inviolate the memorial of the divine goodness. It is no small mercy to be brought out from an ungodly world and separated unto the Lord.
EXPLANATORY NOTES AND QUAINT SAYINGS
Ver. 5. I heard a language that I understood not. The language that he then heard — the religious worship of idolaters, — vows offered up “to birds and fourfooted beasts, and creeping things,” Rom 1:23, and strength and mercy sought from every object in nature, except himself, — was a language unknown to him — “he knew it not.” — William Hill Tucker.
HINTS TO THE VILLAGE PREACHER
Ver. 5. What there is in the language of the world which is unintelligible to the sons of God.