いつでも力になります。

English Translation

I will help you any time.

FYI: This Japanese translation is very natural and frequently used in the real world. Another idiom with 力 is

お力添え頂き、ありがとうございます。(おちからぞえいただき)= Thank you for your support.

  • 力になる = (lit.) I become a power for you. → I help you.
  • 力添え = (lit.) attaching power → support/endorsement
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