"To you, my strength" can be combined as one clause. Alternate translation: "You are my strength, so I will sing praises to you" (See: [[rc://en/ta/man/translate/figs-sentences]])
God's being the psalmist's strength represents God protecting him. Alternate translation: "my protector" (See: [[rc://en/ta/man/translate/figs-metonymy]])
High towers are places that people can go to for shelter from their enemies. The psalmist speaks of God protecting him as if God were a strong, safe shelter. Alternate translation: "you have protected me like a high tower" (See: [[rc://en/ta/man/translate/figs-metaphor]])
The abstract noun "faithfulness" can be translated with an adjective. This can be expressed in a separate sentence. Alternate translation: "He is the God who is faithful to his covenant" (See: [[rc://en/ta/man/translate/figs-abstractnouns]])