אָ֣ז תַּצְלִ֔יחַ אִם־תִּשְׁמ֗וֹר לַעֲשׂוֹת֙ אֶת־הַֽחֻקִּ֣ים וְאֶת־הַמִּשְׁפָּטִ֔ים אֲשֶׁ֨ר צִוָּ֧ה יְהוָ֛ה אֶת־מֹשֶׁ֖ה עַל־יִשְׂרָאֵ֑ל חֲזַ֣ק וֶאֱמָ֔ץ אַל־תִּירָ֖א וְאַל־תֵּחָֽת׃
Then shalt thou prosper, if thou observe to do the statutes and the ordinances which the LORD charged Moses with concerning Israel; be strong, and of good courage; fear not, neither be dismayed.
Read kabbalistic (mystical) interpretation of I Chronicles 22:13: and classical mystical sources.