I Chronicles 12:37 Kabbalah

וּמֵאָשֵׁ֗ר יוֹצְאֵ֥י צָבָ֛א לַעֲרֹ֥ךְ מִלְחָמָ֖ה אַרְבָּעִ֥ים אָֽלֶף׃ (ס)

And of Asher, such as were able to go out in the host, that could set the battle in array, forty thousand.

Read kabbalistic (mystical) interpretation of I Chronicles 12:37: and classical mystical sources.