The phrase "Enter His gates with thanksgiving and His courts with praise" comes from Psalm 100:4. This verse is a call to worship and thanksgiving. It is a reminder that we should always enter into God's presence with an attitude of gratitude and praise. When we do this, we are acknowledging His greatness and goodness. We are also showing our dependence on Him. This is a key part of having a healthy relationship with God. When we enter into His presence with thanksgiving and praise, we are saying that we need Him and we are thankful for all He has done for us. This is an act of worship that pleases God and brings us closer to Him.