If under the terms of any annuity contract or life insurance policy, or under any written agreement supplemental thereto, issued by any life insurer, the proceeds, or any part thereof, are retained by the insurer at maturity or otherwise, no person entitled to any part of such proceeds or any installments of interest due, or to become due thereon, shall be permitted to commute, anticipate, encumber, alienate, or assign the same, or any part thereof, if such permission is expressly withheld by the terms of such contract, policy, or supplemental agreement; and if such contract, policy, or supplemental agreement so provides, no payment of interest or of principal shall be in any way subject to such person’s debts, contracts, or engagements nor to any judicial process to levy upon, or attach the same, for payment thereof.