"O LORD, thou art my God; I will exalt thee, I will praise thy name; for thou hast done wonderful things; thy counsels of old are faithfulness and truth."
Isaiah breaks forth into praise as he considers God's love toward those that seek Him as well as God's intentions to redeem Israel as a nation. Isaiah could not control the decisions of His countrymen, but he could choose personally to praise God. He claims the Lord as his own; and someday all of Israel will do the same. Unlike man's gods, the Lord seeks a personal relationship with individuals. After Adam and Eve had sinned, they hid themselves from God. The Lord responded to this action by calling out, "Where art thou (Genesis 3:9)?" This question was designed for their benefit. On that day, man's personal relationship with God was broken because of sin; and God immediately put into motion a plan for that relationship to be restored through Christ (Genesis 3:15). He did this because He wants to be the personal God of every man who will receive Him. It is not enough for Him to be the God of a one's father, mother, pastor or friend. He must be one's own God through simple faith in the Person of the Messiah. Isaiah understood the importance of this.
The verb exalt means to rear up. As a horse rears up on its hind legs, Isaiah desired to lift up God's greatness before all. After her conversion at the end of the Tribulation Period, Israel will do the same as she bows before Christ.
The verb behind praise means to confess. God-honoring praise is the result of humbly confessing the Lord's worthiness while repentantly acknowledging one's own sin and degradation.
The noun behind wonderful is the same Hebrew word used for Christ's name Wonderful in 9:6. The gracious and wonderful works of God are personified by the Lord Jesus Christ. All who have ever come to Him for salvation have found this to be so, and someday the Jewish people will discover the true wonders of God by turning in faith to their Messiah.
Isaiah's joy and the joy of every believer is not a product of one's own worthiness; it is a product of God's faithfulness and truth. "...God commendeth his love toward us, in that, while we were yet sinners, Christ died for us (Romans 5:8)." The Lord's firmness makes salvation possible. Israel does not understand this now, but she will.