וַיְחַזֵּ֤ק חָרָשׁ֙ אֶת־צֹרֵ֔ף מַחֲלִ֥יק פַּטִּ֖ישׁ אֶת־ה֣וֹלֶם פָּ֑עַם אֹמֵ֤ר לַדֶּ֙בֶק֙ ט֣וֹב ה֔וּא וַיְחַזְּקֵ֥הוּ בְמַסְמְרִ֖ים לֹ֥א יִמּֽוֹט׃ (ס)
So the carpenter encouraged the goldsmith, And he that smootheth with the hammer him that smiteth the anvil, Saying of the soldering: ‘It is good’; And he fastened it with nails, that it should not be moved.
Read kabbalistic (mystical) interpretation of Isaiah 41:7: and classical mystical sources.