יֶשׁ־לְאֵ֣ל יָדִ֔י לַעֲשׂ֥וֹת עִמָּכֶ֖ם רָ֑ע וֵֽאלֹהֵ֨י אֲבִיכֶ֜ם אֶ֣מֶשׁ ׀ אָמַ֧ר אֵלַ֣י לֵאמֹ֗ר הִשָּׁ֧מֶר לְךָ֛ מִדַּבֵּ֥ר עִֽם־יַעֲקֹ֖ב מִטּ֥וֹב עַד־רָֽע׃
It is in the power of my hand to do you hurt; but the God of your father spoke unto me yesternight, saying: Take heed to thyself that thou speak not to Jacob either good or bad.
Rashi on Genesis
יש לאל ידי means MY HAND HAS THE STRENGTH AND THE POWER — to do you hurt (אל therefore means strength and יש לאל ידי is equivalent to יש אל לידי). Wherever אל is used as a Divine Name it is because it signifies strength and abundance of power.