義務的履行是指債務人按照合同規定或者法律的規定充分履行義務。 它是債務最重要的影響，也是債務人最重要的義務。
債務的履行不同於付款和償還。 受償是指債務人應有的具體行為，常用於債務標的物，具有抽象的、靜態的含義清償是指債務人履行義務的效果，通常用於債務消滅的原因;而履行則是指債務人為履行債務內容而需要採取的具體行為，具有具體的、動態的含義。 債權人未通知債務人而分立、合併、變更住所，致使債務履行困難的，債務人可以中止履行或者交存標的物。
提前履行義務：
《合同法》第七十一條：
債權人可以拒絕債務人提前履行債務，但提前履行不損害債權人利益的除外。
the obligee may reject the obligor's advance performance of its obligations, except that the advance performance does not harm the obligee's interests.
債務人為提前履行對債權人的債務而產生的額外費用，由債務人承擔。
any additional expense incurred by the obligee due to the obligor's advance performance of its obligations shall be borne by the obligor.
部分履行義務：
《合同法》第七十二條：
債權人可以拒絕債務人部分履行債務，但部分履行不損害債權人利益的除外。
an obligee may reject the obligor's partial performance, except that the partial performance of its obligations does not harm the obligee's interests.
債權人因債務人部分履行債務而產生的額外費用，債務人應當承擔。
any additional expense incurred by the obligee due to the obligor's partial performance of its obligations shall be borne by the obligor.
參考雙語例句：
thus, a model law may embrace: (a) both consensual and non-consensual security rights; (b) security rights in both movable and immovable property; (c) possessory security rights and mere enforcement preferences; and (d) the use of title to secure performance of an obligation.
因此，《示範法》可包括：（a） 合意擔保權和非合意擔保權;（b） 合意擔保權;（b） 合意擔保權;（c） 合意擔保權;（c）（b） 動產和不動產上的擔保權;（c） 占有式擔保權和簡單強制執行優先權;以及（d）使用產權來確保義務的履行。
in situations where the secured creditor proposes to a grantor/licensee to acquire the licence in total or partial satisfaction of the secured obligation and neither the grantor nor any other interested party (such as the debtor, any other person owing performance of the secured obligation or any person with rights in the encumbered asset; see recommendations 156-158) object (and the licence agreement does not prohibit the transfer of the licence), the secured creditor becomes vested with the licence according to the terms of the licence agreement between the licensee and the li***
有擔保債權人向設保人、被許可使用人以及設保人或任何其他關聯方（如債務人、須履行附擔保債務的任何其他人或對擔保資產享有權利的任何人）提議許可全部或部分清償附擔保債務;見建議156-158），而且許可協議並不禁止許可的轉讓），有擔保債權人根據被許可使用人與許可權人之間的許可協議的條款取得許可。
to borrow or raise money in such manner as the company shall think fit, and in particular by the issue of debentures and to secure the repayment of any money borrowed, raised or owing, by mortgage, charge, or lien upon the whole or any part of the company’s property or assets (whether present or future) including its uncalled capital, and also by a similar mortgage, charge, or lien to secure and guarantee the performance by the company of any obligation or liability it may undertake.
以本公司認為合適的方式借款或籌集資金，特別是通過發行債券和以抵押、抵押或留置權的方式，以本公司的全部或任何部分財產或資產（無論是現在的還是以後的財產或資產）（包括其未收回的股本）來確保償還任何借款， 籌集或負債的款項，以及擔保和擔保公司通過類似抵押、抵押或留置權可能產生的任何義務或責任的履行。