Psalm 105
Psalm 105:1–45 finishes by testifying that God brought his people into the land in remembrance of his promises to Abraham and so that they can serve him in obedience to his law (Psalm 105:42–45). This would be a good song to sing. Since it is very long, you can sing some verses before the sermon and other verses after the sermon.
43 C'est ainsi que l'Eternel donna à Israël tout le pays qu'il avait juré de donner à leurs pères; ils en prirent possession et s'y établirent.