The truth of Proverbs 3:9–10 is seen ultimately in the new heaven and earth where we all will possess a mansion (John 14:2 KJV). Moreover, the incredible truth of the gospel is that God makes us into His firstfruits, the first and best of what is given to Him. As James 1:18 states, the Lord has brought us forth as firstfruits. Our giving to God and His work is a tangible expression of the trust by which the Lord makes us into the first and best of what He owns.
The good that we do will not save us; only the perfect righteousness of Christ can do that. However, the Lord is still pleased to reward His people for what they do in serving Jesus. Since God ponders our paths, we know that He sees all of the good that we do in Jesus’ name, so even if it is not recognized now, it will be recognized on the last day. We can be content to let much of our service remain secret because we know the One who sees in secret will reward us (Matt. 6:4).