Exhibit 32.1

Sarbanes-Oxley Act of 2002, Section 906

Certification of Principal Executive and Principal Financial Officers

In connection with the Quarterly Report on Form 10-Q of First Financial Corporation (the “Company”) for the Quarterly period ended June 30, 2023 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), Norman L. Lowery , as the Chief Executive Officer of the Company, and Rodger A. McHargue, as the Chief Financial Officer of the Company, each hereby certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to his knowledge:

1.This Report fully complies with the requirements of Sections 13(a) or 15(d) of the Securities Exchange Act of 1934, and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

August 2, 2023	By /s/ Norman L. Lowery
	Norman L. Lowery, Chairman, President & CEO
	(Principal Executive Officer)
August 2, 2023	By /s/ Rodger A. McHargue
	Rodger A. McHargue, Treasurer & CFO
	(Principal Financial Officer)