1b I will praise thy name; for thou hast done wonderful things; thy counsels of old are faithfulness and truth.
Praising God is the outflowing of a thankful heart. When a heart is full of gratitude towards God, it hastens to bless His name. A thankful heart is resolute to praise God’s name, just as Isaiah said, “I will praise thy name”. Here the prophet was determined to praise God.
Isaiah was about to proclaim the great wonders which will occur upon the establishment of the LORD’s kingdom on earth. In chapter 25, Isaiah (speaking in the first person) described the great wonders which will occur when the LORD’s kingdom is established on the earth. His heart, being full of adoration and thanksgiving, was greatly excited to express itself to magnify the LORD. It is those who are so stirred up within themselves to praise God that will stir up others also to do the same. Isaiah thus began with an intensely personal affirmation that the LORD is his God. He had already laid claim that the LORD is his God; he had earlier said, “O LORD, thou art my God”. Such acknowledgment of the LORD as one’s God provides the desire and motivation to exalt Him.
Having in his heart the knowledge of the great wonders of God which will occur when the LORD’s kingdom is established on the earth, the prophet determined to praise God. Here he gave two specific reasons for praising the LORD. The first reason for exalting the LORD is that He “hast done wonderful things”. In fact, Scripture presents our God as “the LORD God, the God of Israel, who only doeth wondrous things” (Psalm 72:18). Even when the LORD acts to chasten us or try our faith, we must confess that all His works are wondrous. His works are perfect, great (cf. Psalm 92:5), marvellous (cf. Psalm 139:14), powerful (cf. Psalm 111:6), merciful (cf. Psalm 145:9), holy (cf. Psalm 145:17), and in truth (cf. Psalm 33:4).
The second reason for Isaiah’s dedication to the LORD’s praise is that His “counsels of old are faithfulness and truth.” The ancient counsels of God’s Word are perfectly trustworthy. All that God has revealed in the days of old remain steadfast and true even today. Not a word of His revealed counsels shall fail. The fact that His promises and prophecies continue to be fulfilled assures us of the veracity and profitability of all the counsels of the Scriptures. Isaiah later declared that “the LORD of hosts… is wonderful in counsel, and excellent in working” (Isaiah 28:29). Praise the LORD!